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1 | package Promulger::List; |
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2 | use Moo; |
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3 | |
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4 | use autodie ':all'; |
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5 | use Carp; |
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6 | use Path::Class; |
7 | use Fcntl ':flock'; |
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8 | use Tie::File; |
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9 | use File::Slurp qw/read_file write_file/; |
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10 | use Data::Dumper; |
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11 | use Try::Tiny; |
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12 | $Data::Dumper::Purity = 1; |
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13 | |
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14 | use Promulger::Config; |
15 | |
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16 | has listname => ( |
17 | is => 'ro', |
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18 | isa => sub { $_[0] =~ /^\w+$/ or die "listname must be a string" }, |
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19 | required => 1, |
20 | ); |
21 | |
22 | has active => ( |
23 | is => 'rw', |
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24 | isa => sub { ($_[0] == 0 || $_[0] == 1) or die "active must be 0 or 1" }, |
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25 | required => 1, |
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26 | default => sub { 1 }, |
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27 | ); |
28 | |
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29 | has subscribers => ( |
30 | is => 'rw', |
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31 | isa => sub { ref $_[0] eq 'HASH' or die "subscribers must be a hashref" }, |
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32 | required => 1, |
33 | default => sub { {} }, |
34 | ); |
35 | |
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36 | sub resolve { |
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37 | my ($self, $proto) = @_; |
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38 | $proto =~ s/-request$//; |
39 | my $path = find_path_for($proto); |
40 | my $maybe_list; |
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41 | try { |
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42 | $maybe_list = __PACKAGE__->load($path->stringify); |
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43 | } catch { |
44 | die "oh noes: $_"; |
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45 | }; |
46 | return $maybe_list; |
47 | } |
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48 | |
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49 | sub subscribe { |
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50 | my ($self, $new) = @_; |
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51 | return if $self->subscribers->{$new}; |
52 | $self->subscribers->{$new} = 1; |
53 | $self->store(find_path_for($self->listname)->stringify); |
54 | return 1; |
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55 | } |
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56 | |
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57 | sub unsubscribe { |
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58 | my ($self, $ex) = @_; |
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59 | return unless exists $self->subscribers->{$ex}; |
60 | delete $self->subscribers->{$ex}; |
61 | $self->store(find_path_for($self->listname)->stringify); |
62 | return 1; |
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63 | } |
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64 | |
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65 | # XXX implement ACLs and other shinies -- apeiron, 2010-03-13 |
66 | sub accept_posts_from { |
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67 | my ($self, $sender) = @_; |
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68 | return grep { $sender eq $_ } keys %{$self->subscribers}; |
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69 | } |
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70 | |
71 | sub setup { |
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72 | my ($self) = @_; |
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73 | my $config = Promulger::Config->config; |
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74 | my $name = $self->listname; |
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75 | croak "${name} already a known list" if $self->resolve($name); |
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76 | my $path = find_path_for($name); |
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77 | |
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78 | my $tie = tie my @aliases, 'Tie::File', $config->{aliases}; |
79 | $tie->flock; |
80 | my @list_aliases = ($name, "${name}-request"); |
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81 | |
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82 | for my $list_alias (@list_aliases) { |
83 | if(grep { /^${list_alias}:/ } @aliases) { |
84 | croak "${list_alias} already in $config->{aliases}"; |
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85 | } |
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86 | push @aliases, |
87 | qq(${list_alias}: "|$config->{bin_root}/pmg msg -c $config->{config_file}"\n); |
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88 | } |
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89 | |
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90 | $self->store($path->stringify); |
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91 | } |
92 | |
93 | sub delete { |
94 | my ($self) = @_; |
95 | my $config = Promulger::Config->config; |
96 | my $name = $self->listname; |
97 | |
98 | my $tie = tie my @aliases, 'Tie::File', $config->{aliases}; |
99 | $tie->flock; |
100 | |
101 | my @list_aliases = ($name, "${name}-request"); |
102 | @aliases = grep { |
103 | $_ !~ /^$list_aliases[0]:/ && |
104 | $_ !~ /^$list_aliases[1]:/ |
105 | } @aliases; |
106 | |
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107 | unlink find_path_for($self->listname)->stringify; |
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108 | } |
109 | |
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110 | sub find_path_for { |
111 | my ($proto) = @_; |
112 | my $path = file(Promulger::Config->config->{list_home}, $proto . ".list"); |
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113 | return $path; |
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114 | } |
115 | |
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116 | sub store { |
117 | my ($self, $path) = @_; |
118 | my $dumped = 'do { my '. Dumper($self) . '; $VAR1; }'; |
119 | write_file($path, $dumped); |
120 | } |
121 | |
122 | sub load { |
123 | my ($class, $path) = @_; |
124 | return do $path; |
125 | } |
126 | |
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127 | sub get_lists { |
128 | my ($self) = @_; |
129 | my $config = Promulger::Config->config; |
130 | my @lists = map { $_->basename} |
131 | grep { -f } dir($config->{list_home})->children; |
132 | s/\.list//g for @lists; |
133 | return @lists; |
134 | } |
135 | |
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136 | 'http://mitpress.mit.edu/sicp/'; |